MarsSeed [1] filed a deletion request for python2-sympy [2]: This legacy Python2 module from 2019 is no longer needed. AUR/pythoncad is a broken Qt4 pkg from 2015, but it has an updated continuation fork based on Python3 and Qt5 (notified its maintainer). Safe to delete this unused build. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python2-sympy/